CVE-2026-53322 is a vulnerability in Linux Kernel
Published on June 26, 2026
vfio/pci: Clean up DMABUFs before disabling function
In the Linux kernel, the following vulnerability has been resolved:
vfio/pci: Clean up DMABUFs before disabling function
On device shutdown, make vfio_pci_core_close_device() call
vfio_pci_dma_buf_cleanup() before the function is disabled via
vfio_pci_core_disable(). This ensures that all access via DMABUFs is
revoked before the function's BARs become inaccessible.
This fixes an issue where, if the function is disabled first, a tiny
window exists in which the function's MSE is cleared and yet BARs
could still be accessed via the DMABUF. The resources would also be
freed and up for grabs by a different driver.
Products Associated with CVE-2026-53322
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Affected Versions
Linux:- Version 5d74781ebc86c5fa9e9d6934024c505412de9b52 and below 4f1000a30f67cf7d328059242776a858611d5ef9 is affected.
- Version 5d74781ebc86c5fa9e9d6934024c505412de9b52 and below d97708701434ce72968e771976aaf9d3438fcafd is affected.
- Version 6.19 is affected.
- Before 6.19 is unaffected.
- Version 7.0.10, <= 7.0.* is unaffected.
- Version 7.1, <= * is unaffected.